Carriage-stop mechanism for type-writing machines.



I H. K..HENRY. v CARRIAGE STOP MECHANISM FOR TYPE WRHING MACHINESV AFPLICATION FILED JAN. 18; I918.

Patented Dec. 10, 1918.

2 SHEETSSHEET I.

I a. K. HENRY. CARRIQGE STOP MECHANISM {0R TYPE WRITING MACHINES.

APPLICATION FILED "MN. l8. IBIB.

Patented DecQlO, 1918.

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TED STATES PATEN HUBERT K. HENRY, OF DETROIT, MICHIGAN, ASSIGNOR TO REX TYPEWRITER COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CARRIAGE-STOP MECHANISM FOR TYPE-WRITING MACHINES.

Patented Dec. 10, 1918.

Original application filed February 4, 1915, Serial No. 6,127, Divided and this application filed January 18,

' 1918. Serial No. 212,498.

' the traveling carriage. The invention con- .tion of a machine with the present improved carriage stop mechanism applied thereto.

sists in the features of improvement hereinafter set forth, illustrated in the preferred form in the accompanying drawings, and mor particularly pointed out in the appended claims. 7

The present application is a division of an earlier application for patent on improvements in typewriting machines filed by me in the United States Patent Oflice February 4, 1915, Serial No. 6,127, Patent No. 1,254,501.

In the drawings: Figure l is a rear eleva- Fig. 2 is a plan view. .Fig. 3 is a detail sec-. tion on the line 3-3 of Figs. 1 and 2. Fig.

4. is a detail section in elevation of the re-,

leasing and tabulating key.

The frame of the machine comprises side plates 10 connected at points adjacent their rear ends by a horizontal transverse bar 11 and by a verticallydisposed type-bar segment 12 which is fixed to the side platesby screws 13. AS usual, the frame is mounted upon suitable supporting feet 14.

The traveling paper carriage is preferably mounted upon a vertically movable carriage supporting frame which comprises a transverse carriage bed or track 15 mounted upon the upper ends of a pair of uprights 16. The uprights 16 are formed of flat sheet metal and are providedat their upper ends with rearwardly projecting arms 17 having inturned flanges 18 to which the carriage bed or track 15 is secured. The rear edges of the uprights 16 abut against the front face of ,the type-bar support 12 and their front edges areengaged by guides 19 preferably riage bed or track 15, and engage the inner faces of the side walls 10. The lower ends of the uprights engage the ends of a transverse rod '21 which,,as described in the application referred to above, is mounted upon the rear portion of a key actuated rocking frame suitably mounted in the lower portion of the machine frame. The vertically movable carriage supporting frame rests by gravity in normal position with stops or buffers 22 thereon engaging the upper edges of the. side plates 10 of the machine frame, Springs 23. connected to thc type-bar support 12 and'to the transverse rod 21, partially counterbalance the weight of the carriage and the carriage supporting frame. The type-bars and key levers (not shown) are fully set forth in the application above referred to, the type-bars being pivotally mounted on the upper front portion of the type-bar support or segment 12.

' T he carriage track or bed 15, in the form shown. is formed of pressed sheet steel and is provided at its front and rear edges with upturned. inwardly inclined flanges 24. The frame of the carriage is also formed of pressed sheet steel and comprises a transverse bar or plate 25 having down-turned. inwardly inclined flanges 26 at its front and rear edges and upturned end pieces 27 which support the platen 28. The lower portion of the carriage slidably fits betwc-cnthe guide flanges 21 with the lower edges of the flanges 26 on the carriage engaging the horizontal portion of the bed or track 15. The carriage is propelled in letter-space direction by a spring-drum 29 mounted upon a bracket 30 on the under side of the carriage ,track 15.

Thedrum projects upwardly through an .below the horizontal carriage plate 25 of the carriage, the strap being connected to one end of the carriage by a hook 32. v

The escapement mechanism which controls the letter-space movement of the carriage, is mounted upon a bracket 33 of inverted U-shape which is fixed to the under face of the carriage bed or track 15 and at the rear central portion thereof. This bracket is provided-with down-turned ears and also with an upwardly and rearwardlyv projecting portion 34 having at its upper end an inwardly ofi'set stop lug 35. A yoke 36 is connected to the bracket 33 by a horizontal pivot pin 37 and is provided with forwardly extending arms. 38 which supportv a dog- ,rocker 39. A bent or U-shaped arm 40 is fixed totheyoke or bracket 36 and extends upwardlythrough the opening in the hori- Zontal portion of the. bracket 33. A spring 41, coiled about the pivot pin 36, engages one of the arms 38 and holds the yoke or bracket 36 and parts carried thereby in normal position with the arm 40 engaging an adjustable stop screw-42 on the upright 34.

The dog-rocker is pivoted at 43 to the 38 of the yoke or bracket 36 and carries affixed and spacing dogs 44 and 45 which project upwardly through an opening in the carriage bed or track and co6perate with a rack 46 fixed to the under side of the carriage plate 25. The lower end of on the lower end of the dog-rocker. actuating shifter is connected by pivot pin the dog rocker 39 is'connected by a screw 47 to an actuating shifter 48, the screw extendin through a vertical slot in the actuating shifter and through a forwardly turned Il ililg 49 to a coupling member50 that is secured to the central portion of a universal bar 51.

The latter is of segmental form and extends above the type-bar segment in position to be struck by the type-bars as they are actuated. At points adjacent its ends the universal bar is connected to the upper formovement of the shifter is also guided by a link 57 which extends between the rearwardly projecting portion thereof and a lug 58 on the transverse bar 11 of the-machine frame. The pin-and-slot connection between the dog-rocker and actuating shifter permits the vertical movement of the dog-rocker 'with the carriage and carriage supporting frame.

In the ordinary operation of the escapement,'the dog-rocker oscillates in /the yoke or bracket 36 and the latter is held stationary with the upwardly projecting arm 40 engaging the stop-screw 42. By shifting the upper end of the arm 40 forwardly, the yoke or bracket 36 can be rocked on the pivot pin 37 to depress the arms 38 and the dogrocker carried thereby and-thus moves the escapement dogs out of engagement with the carriage racks 46 and permit the free lateral movem'ent'of the carriage. For this purpose,

the U-shaped arm 40 is provided with an upwardly projecting portion 40 which extends in front of and engages the front face of a vertically disposed transverse plate or bar 59. This bar is provided at its ends with rearwardly turned lugs 60 which are fixed to a pivot rod or rock shaft 61. The latter extends between and is journaled in ears 62 on the end pieces 27 of the carriage. The. engaging portions of the part 40 and of the plate or bar 59 extend above and be low the pivot rod or rock shaft 61, so that the arm 40, which is held against stop-screw 42 by the spring 41, tends to hold the bar 59 and parts connected thereto in-central position. Also, by reason of this arrangement, the movement of the rock-shaft 61 and 'bar or plate 59. in either direction from normal central position will move the upper end portions 40 of the arm 40 forwardly to release the escapement. For shifting'the pivot rod or rock shaft 61 in opposite directions, a finger-piece 63 is fixed to one end thereof, the right-hand end in the .form shown, adjacent and preferably outside one of the end plates 27 of the carriage; The finger-piece is provided adjacent its pivot with inwardly projectin lugs 64 arranged on opposite sides of the ear 62 of the adjacent end plate and cotiperates with the edge portions of the ear to limit the movement of the release key and parts actuated thereby, which, as stated,

can be shifted in opposite directions to release the carriage from its escapement.

A stop supporting bar 65 extends between and is fixed to the rear ends of the lugs 60. A pair of margin stops 66 and 67 "are adjustably mounted upon the stop bar and one or more tabulator stops 68 are also mounted upon the rod. These stops arepreferably formed of sheet metal bent to extend about the stop-supporting rod and are adjustably held in position by screws 69. The left-hand margin stop 67 is provided with a rearwardly projecting, depending lug 70, and the right-hand margin stop 66 is provided with a rearwardly projecting, depending lug 71 and also with a swinging bell trip 72. As the carria e-moves in letter-space direction, the trip 2 will first engage :1. lug 73 on the. upper end of a bell hammer 74.

The latter is pivoted at its upper end to an arm 75 which is secured to and projects rearwardly from the carriage bed 15. A depending arm 76, formed in piece with the arm 75, carries the bell 77. After the trip 72 passes the lug 73, the hammer 74 is released to sound the bell and notify the operator that the' carriage is approaching the end of its movement. At the end of the letter-space movement the member 72 will engage the fixed stop lug 85 and will be moved against the lug 71 of the margin stop to positively arrest thecarriage, The margin stop 67 and its lug 70 coiiperatewith the fixed lug to limit the return movement of the carriage.

The lugs of the. margin stops are arranged to engage the fixed lug 35 in any position of the stop supporting rod (35, but each of the tabulator stops is provided at its upper portion with a rearwardly projecting lug 7 8 which, in the normal position of the stop rod 65, passes above the fixed stop 35. If, however, the finger-piece 63 is moved rear- Wardly, the rod 65 and stops will be lowered and the lug 78 of the tabulator stop brought into line with the fixed stop 35. Atthe same time, the plate or bar 59 will be shifted to effect the escapement release and the carriage can then be moved until the tabulator stop engages the fixed stop. By shifting the upper end of the finger-piece 63 vfor-.

wardly, the carriage may be released without' throwing the tabulator stop into operation. Preferably, the screws ,69 which hold the margin and tabulator stops in place are arranged to engage seats 79 formed in the upper edge of the stop bar 65 at letter-space distances apart.

()bviously, changes may be made in the details set forth without departure from the essentials of the invention as defined in the claims.

I claim as my invention:

1. In a typewriting machine, the combination with a carriage, carriage bed and escapement for said carriage, of a shiftable membermounted on said carriage, means actuated by said member when shifted in opposite directions for. releasing said escapement and tabulating devices operated by said member when shifted in one-direction.

2. In a typewriting machine, the combination with a carriage, carriage bed and escapement for said carriage, of a horizontal rocking member mounted on said carriage, means actuated by said member when shifted in opposite directions for releasing said cscapement, a tabulator stop or stops mounted on said member, and a stop on said carriage bed arranged to cooperate with said tabulator stop or stops when said .member is shifted in one direction.

3. In a typewriting machine, the combination with a carriage, carriage bed and escapement, of a horizontal transverse rocking member mounted on said carriage and arranged to be shifted in opposite directions from normal positions, meansac'tuated by said member when shifted in either direction for releasing said escapement, a stop on the carriage bed, adjustable margin stops on said member arranged to cooperate in all the different positions thereof, with said firstmentioned stop and an adjustable tabulator stop on said member arranged to cooperate with said first-mentioned stop only when said member is shifted in one direction.

HUBERT KLHENRY.

copies of thia patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, I). 0. 

